Switch



Jan. 5, 1932. E, B ws 1,839382 SWITCH I Filed Aug. 28, 1931 INVENTOR %kW/?DE &TW/545'.-

VBY HIS ATTORNEYS i Patented Jan.5,j932

i Umm srrss EDWARD B.` ENTwisLE, or JO-INSTOW-N;?ENNSYLVANIA i Applcationfilel August 28, 1931. seria in@ 5563317; p

This invention relates to switch Operating i nechanisin` and nore particularly to an im- Patent No; `1,125,957

is to provide an adjust-able spring link for sad switch-Operating mechansm.

means 'ofseating the adjustalolespring link in said switch Operating nechanisn.

* `Another object is to provide a switch opthat may be readily assenbledand adjusted.

Other objects and advantages will he' api parent as the invention is nore fully disclosed.

' In accordance with the objects of theipresent invention I have devised a novel type of 'adjustable spring link and means for seating the same within the switchbox as will be fully apparent from the following description taken withthe accompanying drawings.

Referrng to the drawings, Fig. 1 is a plan showing a` switchoperating.mechanism incorporating theelements of the present` ini vention;

Fig. 2 is an enlargedview partly in' section i of the springlink and spring' link seatng means of the present invention;

3-3, Figl; i i

`'Fig 4 is a cross-sectional VeW"Of the spring link seating means of the 'present in- .vention; and v o i* Figo 5 is a View of the spring link head which is adapted to be 'seated-in the recess shown in Fig. 4.'

e In Fig. 1 the switchoperating nechanism of the 'present inventon comprises a switch base 1 supported in the usual manner upon a road bed 'including ties 21 upon' which is mounted in any convenient nanner the switch housing 2. Flanges 3 on the housing 2 are adapted to receive a cover (not shown),

' The switch Operating meanscoinprises the usual type of reach rod 4 seated in the switch base 1` and adapted at 'one'end tobe attached toga switch tongue` and'at the`-`other end to spring link members. The ends of the the present invention Another object is to provide an improved erating mechanisn including spring links core openingof coil 14.

springlinks 6 are adapted to pivot within reccsses in the end of'reach rod 4 and within recesses or seats in housing@ so that the reach r'od 4 may be freely moved back and. iorth to either of the two positions -indicated a n Fig. l, the'compression in the springs' of the spring links 6' serving to` yieldably re- -tain the switch tonguein the desired switched i position. i

-leretofore the spring in the' spring link e has not :been made adjustable; and a de ircd tension could not be obtained therei n i i "except by changing the spring'strengths I propose to obtain' this `mijustability"of'the spring* by-coniprising the` springlink of g three sections; athreaded bolt 'section having a spherical head and a plurality 'of nuts i threaded thereon; a helic'al spring; and a :cylindrical shaped end piece section having a fiange extension;` a rounded end i suitable i;

end section having'a flangel, (a rounded` end section 17 and anopposite end section '(iden-` tied byfinumeral `1 5) adapted to enter the L Instead of providingthe switch boxhous ing 2 with a molded seat asheretofore, I provide the same with` a recess 18 adapted to re-` "of the present invention is 51 15 illustrated with particularity in Fig.*2f in helcal spring; and 15 conprisesthe detached 1280 Fig is a sectional View taken along plane ceive and to seat a hardened steel piece 19 provided with a spherical seat 20 adapted i illustrated in Fig. 2.`

- 'In asseinbling thefswitchmechanism of the, present inventionthe threaded bolt 10 with the two thre'aded nuts 12 and Washer 13 in position close to the spherical head 11, 23 the spring coil 14 and theendpiece 15 are 'loosely assenbled together and placed with to receive the spherical head 11 of bolt -10 as %19.

ing compression tothe sprngcoil 14: results in the desired snap in the switching mechansm. To remove either or both the reverse procedure only is necessary.

It is apparent that in addition to the marked advantages of ready assembly of parts and adjustability as to spring compression, the use of the end piece l5 provides sidewise flexibility and give which is 'not inherent in other structure& This facilitates the shifting of throw rod 4 in either direction, there being no resistance due to :friction within the movable parts to overcome.

From the above description and drawings it is apparent that many modifications and adaptations of the specific embodiment disclosed herein may be made without departing essentially from the nature and scope of the present invention as may be set forth in the following claims. a

WhatI claim isz r V r :1.I n a" switch inechanisni, adjustable spring links each comprising a threaded bolt having a spherical head, a plurality of threaded nutsthereon, a helical spring and an end pieceincluding; spring retaining ,means and means to engage a reach rod.,

2. In a 'switch mechanism,` an adjustable spring link comprising a helical spring, a .threaded bolt having a spherical headland a body adapted to enter the spring core and a third -member having one end -thereof adapted to engage and retain one end of said spring and the other end adapted toengage a *switch reach rod, andmeans 'to adjust the spring compression. v

3. In a switch mecha'nism, an adjustable spring link comprising a'helical spring, a threaded bolt having a spherical head and a body adapted to enter the spring core and a thirdmember having one end thereof adapted to engage 'and retain one end of said spring and the other end adapted to engage a-switch reach rod, and means to adjust the spring 'compression comprising a plurality of threaded nuts on said bolt. intermediate the 'spring endand said bolt headandv adapted to be moved along 'the boltbody threads.

In witness whereof I havehereunto signed myname g -EDWARD ENTWISLE. 

